If a body is thrown up with the velocity of 15 m/s, then the maximum height attained by the body is: (assume g = 10 m/s2

1. 11.25 m

2. 16.2 m

3. 24.5 m

4. 7.62 m

Subtopic:  Uniformly Accelerated Motion |
 89%
From NCERT
PMT - 2003
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A balloon is rising vertically up with a velocity of 29 ms–1. A stone is dropped from it and it reaches the ground in 10 seconds. The height of the balloon when the stone was dropped from it is (g = 9.8 ms–2) 

(1) 100 m

(2) 200 m

(3) 400 m

(4) 150 m

Subtopic:  Uniformly Accelerated Motion |
 78%
From NCERT
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A ball is released from the top of a tower of height h meters. It takes T seconds to reach the ground. What is the position of the ball in T/3 seconds? 

1. h/9 meters from the ground

2. 7h/9 meters from the ground

3. 8h/9 meters from the ground

4. 17h/18 meters from the ground

Subtopic:  Uniformly Accelerated Motion |
 65%
From NCERT
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Two balls of same size but the density of one is greater than that of the other are dropped from the same height, then which ball will reach the earth first (air resistance is negligible) 

(1) Heavy ball

(2) Light ball

(3) Both simultaneously

(4) Will depend upon the density of the balls

Subtopic:  Uniformly Accelerated Motion |
 88%
From NCERT
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A packet is dropped from a balloon which is going upwards with the velocity 12 m/s, the velocity of the packet after 2 seconds will be 

(1) –12 m/s

(2) 12 m/s

(3) –7.6 m/s

(4) 7.6 m/s

Subtopic:  Uniformly Accelerated Motion |
 69%
From NCERT
PMT - 2004
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If a freely falling body travels in the last second a distance equal to the distance travelled by it in the first three seconds, the time of the travel is:

1. 6 sec

2. 5 sec

3. 4 sec

4. 3 sec

Subtopic:  Uniformly Accelerated Motion |
 67%
From NCERT
PMT - 2004
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The effective acceleration of a body, when thrown upwards with acceleration a will be: 

1. ag2

2. a2+g2

3. (ag)

4. (a+g)

Subtopic:  Uniformly Accelerated Motion |
 60%
From NCERT
PMT - 2004
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A body is thrown vertically upwards with velocity u. The distance travelled by it in the fifth and the sixth seconds are equal. The velocity u is given by (g = 9.8 m/s2

(1) 24.5 m/s

(2) 49.0 m/s

(3) 73.5 m/s

(4) 98.0 m/s

Subtopic:  Uniformly Accelerated Motion |
 73%
From NCERT
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A parachutist after bailing out falls 50 m without friction. When parachute opens, it decelerates at 2 m/s2. He reaches the ground with a speed of 3 m/s. At what height, did he bail out ?

(1) 293 m

(2) 111 m

(3) 91 m

(4) 182 m

Subtopic:  Uniformly Accelerated Motion |
 56%
From NCERT
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When a ball is thrown up vertically with velocity v0, it reaches a maximum height of 'h'. If one wishes to triple the maximum height then the ball should be thrown with velocity

1. 3vo

2. 3v0

3. 9v0

4. (3/2)v0

Subtopic:  Uniformly Accelerated Motion |
 77%
From NCERT
AIIMS - 2005
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